Apparatus for deinking and defibering wastepaper



Aug. 18, 1953 c. s. REID APPARATUS FOR DEINKING AND DEFIBERINC WASTEPAPER 3 Sheets-Sheet 1 Filed May 5, 1949 MMV INVENTOR. 6&a/"Zas 5 7762 ATTD R N EYS 1953 c. s. REID 2,649,371

APPARATUS FOR DEINKING AND DEFIBERING WASTEPAPER Filed May a, 1949 s Sheets-Sheet 2 I N" EN TOR.

ATTD R N EYS C. S. REID Aug. 18, 1953 APPARATUS FOR DEINKING AND DEFIBERING WASTEPAPER HVVENTOR. Jfiar/es 6? E6! 3 Sheets-Sheet 5 Filed May 3, 1949 A'ITD R N EYE Patented Aug. 18, 1953 UNITED srA'rs ATETOFFICE APPARATUS FOR DEINKING AND DE- FIBERING WASTEPAPER Charles S. Reid, Los Angeles, Calif.

Application May 3, 1949, Serial No. 91,105-

4 Claims. 1

This invention relates to a deinking process and means therefor, and more particularly to an apparatus for removing ink from newspapers an the like.

The object of the invention is to provide an apparatus for removing printers ink from newspapers and other paper stock whereby the stock can be reclaimed and used in making further newsprint.

Another object of the invention is to provide an apparatus for deinking decoloring waste paper of all kinds, such as newspapers, magazines, so that with the ink removed the resulting pulp may again be used for making paper.

A further object of the invention is to provide an apparatus whereby paper can be treated and the ink removed therefrom with great economy and facility.

Other objects and advantages will be apparent during the course of the following description.

In the accompanying drawings, forming a part of this application, and in which like numerals are used to designate like parts throughout the same:

Figure 1 is an end elevational view of the machine for deinking waste paper, according to the present invention, and with the conveyor belt being shown in section;

Figure 2 is a sectional view taken on the line -22 of Figure 1;

Figure 3 is a sectional view taken on the line 33 of Figure 2;

Figure 4 is a transverse vertical sectional view of a modified form of the machine;

Figure 5 is a fragmentary vertical longitudinal sectional view of the modified form of the machine; and

Figure 6 is a view similar to Figure 5, but showing another modification of the machine.

Referring in detail to the drawings, there is 1.,

shown the apparatus which is used according to the present invention for removing imprinted ink from newspapers or other paper stock. The apparatus comprises a pair of spaced parallel vertically disposed standards l and H which are secured to a base 12 for supporting the standards 10 and II on a horizontal surface. Mounted on the upper end of the standard it is a bearing block l3, Figure 2, and the bearing block. :3 rotatably supports a horizontally disposed shaft M, there being a passageway i extending longitudinally through the shaft 14 for conveying fluid from a source of supply. A hose i6 is connected to the outer projecting end of the shaft .14 by means of a swivel connection i and the hose l6 serves to -convey fluid, such as water, from a suitable source of supply.

Carried by the upper end of the other standard II is a bearing block l8 which rotatably supports a horizontally disposed solid shaft l9 therein. Mounted on the outer projecting end of the shaft I9 is a pulley and a belt (not shown) is adapted to be trained over the pulley 2i} and connected to a suitable power source for rotating the shaft [-9.

Secured to the inner surface of the bearing block 13 is a body member 2| and secured, to the other bearing block I8 is a similar body member 22, the members 2| and 22 providing a support for a stationary drum 23. The drum 23 is cylindrical in shape and is adapted to receive therein the waste stock from which the ink is to be removed. The drum 23 includes a semi-cylindrical upper portion 24, Figure 3, and a semi-cylindrical bottom portion 25. The-bottom portion 25 includes a pair of arcuate sections 26 and 2'! which are each fabricated 'ofa reticulated material, such as wire mesh screen; A pin 28 hingedly connects the upper end of the arcuate section 25 to one of the lower horizontal edges of the upper portion 24, while a similar pin 29 hingedly connects the upper end of the other arcuate section 21 to the other horizontal edge of-the upper portion 24, Figure 3. Thus, the sections 25 and 2? may be swung from their solid line position of Figure 3 to the dotted-line position when it is desired to empty the drum of the deinked pulp. The sections 26 and 21 pivot about axes extending through the pins 28 and 29.

For normally maintaining the sections 25 and 2! in their closed position a pin its projects through corresponding hinge parts which are formed on the meeting edges of the arcuate sections 26 and 21. The drum 23 is provided with a pair of spaced parallel end walls 3! and 32. Extending between the end walls 3i and 321 arranged longitudinally below the drum E3 is a semi-cylindrical vat 33 which is adapted to receive waste liquid that drains through the bottom portion 25 of the drum The vat 33 includes a pair of arcuate sections and 3%, there being a pin 36 hingedly connectin the arcuate section 34 to the end walls 35 and A similar pin 3?, Figure 3, hin'gedly connects the upper horizontal edge of the arcuate sections 3'5 to the end walls 3i and Thus, the arcuate sections 3 1 and '35 can be moved from the solid line position of Figure 3 to the dotted line position when the drum '23 .is being emptied of deinked pulp. For normally maintaining the arcuate sections -33 and 3 3 in assembled or closed relation, a clamp 38 is arranged in sliding engagement with a projecting portion of each of the sections 34 and 35. The clamp 38 can be disengaged when the sections 33 and 34 are to be swung open.

For filling the drum 23 with waste paper from which the ink is to be removed, a hopper 39 is provided, the hopper 39 being provided with an upper open end 40 and an inclined chute 4| for the passage therethrough of the paper into the drum 23, there being an opening 42 arranged in the end wall 32 which registers with the lower end of the chute 4| for the passage therethrough of the material into the drum 23.

Extending longitudinally below the machine is a conveyor 43 which includes a plurality of horizontally disposed rollers 44 that are supported on uprights 45. A belt 46 is trained over the rollers 44 and when the drum 23 and vat 33 are opened, the deinked pulp will drop onto the conveyor 43 and the conveyor 43 will carry the pulp to drying apparatus, pressers, or direct to a paper mill, as desired.

Extending longitudinally through the drum 23 is a horizontally disposed pipe 41 which has its ends arranged in engagement with the shaft [4 and the shaft [9. The pipe 41 is provided with a plurality of spaced apertures or openings 48 4 horizontally disposed bars 6!, Fig. 3. Thus, when the deinked pulp is being emptied from the drum 23 onto the conveyor 43, a certain portion of the pulp may stick to the arcuate portions 26 and 21 of the drum 23. Therefor, when the drum is opened, the arcuate portions 26 and 2'6 rest against the bars 6!, as shown in Figure 3, so that the operator can kick the bar 61 with his foot to thereby jar the portions 21 and 25 whereby any pulp on the sections 26 and 21 will be freed therefrom and will drop onto the conveyor 43.

so that the incoming water or water mixed with chemicals passes through the shaft l4, and is discharged through the openings 48 into the interior of the drum 23. Thus, as the shaft 19 rotates, the pipe 41 will also rotate. The pipe 41 has fixed thereto a plurality of spaced clamps 49 which each carry paddles 50, the paddles 50 revolving in the drum 23 as the shaft 19 rotates so that the chemicals and waste paper stock are thoroughly intermixed in the drum 23. The pipe 41 also carries a plurality of spaced clamps 5|, which have secured thereto the inner ends of a plurality of radially extending rods 52. Carried by the outer ends of the rods 52 is a plurality of rollers 53 and the rollers 53 serve to dislodge any pulp which may tend to stick to the inner surface of the drum 23. The rollers 53 are of such a size and revolve sufficiently fast that fibers are prevented from building up in the path of the rollers.

Interposed between the drum 23 and the vat 33 is a horizontally disposed tube 54 which is adapted to be connected to a suitable source of water supply or other fluid, and the tube 54 is provided with a plurality of spaced openings 55 for the egress therethrough of this fluid. The tube 54 serves to spray water onto the stock in the drum 23 to help prevent the stock from precipitating or clogging the bottom of the drum 23.

The end wall 3| is provided with an opening 56, Figure 2, for selectively draining therethrough the waste solution. Thus, the solution that drains through the perforated bottom 25 of the drum 23 is received by the vat 33 and can be emptied through the opening 56. An inclined channel 51 serves to receive or catch the fluid flowing through the opening 56 whereby the dispensed liquid can be conveyed to a sewer or the like. A manually operable valve 58 is hingedly connected to the end wall -3l by means of a pin 59 so that when the valve 58 is in the position shown in Figure l, the opening 56 is closed and the solution will be maintained in the vat 33.

Secured to each of the standards [0 and II is a pair of brackets 60 and the brackets 60 are adapted to releasably support therein a pair of Referring to Figure 4, there is shown a slightly modified machine. In the machine of Figure 4, the paddles 52 have a greater length than the paddles 55 in the previously described apparatus, and secured to the outer ends of the paddles 62 are rollers 63 which again serve to dislodge any pulp which may stick to the inner surface of the drum 23. Also there is provided in the apparatus of Figure 4 a slightly modified conveyor, as designated by the numeral 64. The conveyor 64 includes a belt 65 which rides on arcuate rollers 66 so that the belt 65 assumes a concave shape. The conveyor 64 is thus especially suitable when such conveyor is being used for transporting pulp having a high water content, since the arcuate shape of the belt 65 will prevent the water from running over the sides of the belt.

In Figure 5, there is shown an apparatus which has the same construction as the device of Figures l, 2 and 3, except that the tube 54 has been eliminated. Thus, in Figure 5, there is provided a tube 61 which serves to convey water from a suitable source of supply into the vat 33 and this water can be used to help prevent the pulp from precipitating in the bottom of the drum 23. In Figure 6, there is shown another modified construction wherein the apparatus has the same construction as the device of Figures 1, 2 and 3, except that the hollow shaft 14 has been eliminated and in lieu thereof a solid shaft 68 has been provided. When using the apparatus of Figure 6 the water or other fluid can be added through the hopper 39 or through the tube '54.

In use, waste paper stock, such as newspapers or magazines are loaded into the drum 23 through the hopper 39, then suitable deinking chemicals, in the proper proportions, such as sodium silicate, sodium peroxide, and soap solution are added to the drum 23. The drum 23 can be supplied with water or these chemicals either through the hopper 39, through the hollow shaft I4, or through the tube 54. At the same time that these materials are being added to the drum, the shaft i9 is being rotated by a suitable power source, not shown. This causes the paddles 50 to revolve and also rollers 53 rotate, thereby insuring a thorough intermixing of the materials in the drum 23. The speed of the paddles and rollers can be increased as desired. After the materials have been thoroughly agitated and intermixed, the valve 58 is opened and the spent liquid containing ink is discharged through the opening 55 and conveyed away by means of the channelway 51. Then, the drain valve 53 is closed or moved to the position shown in Figure 1 and additional water is supplied into the drum 23 through the pipe 41, the water spraying through the openings 48 in the pipe 41. While the water is being sprayed into the interior of the drum 23, the paddles 50 and rollers 53 are being slowly rotated or revolved. The incoming water serves to wash free any ink particles from the pulp and this wash water is drained through the opening 56 as previously described. Several washings by 5. the water may be necessary, depending :on the type and quantity of waste 'paper 'being'deinked. After the pulp has been thoroughly deinked and the water drained off, the vat "33 is opened. This is accomplished by removing the clamp -38 and pivoting the sections -34 and 35 from the solid line position of Figure 3 to the dotted line-position. Next, the bars H are arranged in engagement with the brackets 68. Then, the pin 3'!) is removed from the lower endof thedrum '23 and the arcuate sections '26 and 2! of the perforated bottom 25 of the drum 23 are swung from their solid line position to their dotted line position so that the arcuate sections 26 and 2? rest against the bar Bl. This operation allows most of the deinked pulp to drop onto the conveyor 43 where it is carried to the driers, pressers, or paper mill. However, a certain amount of the deinked pulp may stick or adhere to the sections 26 and 27 and to remove or dislodge this material from the sections 26 and 21, the operator need only kick the bars 6| to thereby jar the sections 26 and 2'! whereby the material thereon will also drop onto the conveyor 63 and be conveyed to the desired location. After the deinked pulp has all been emptied from the machine, the drum 23 is again closed as is the vat 33, and the above cycle is repeated to deink an additional supply of waste paper stock.

What I claim:

1. A machine for deinking and decoloring inprinted paper stock to produce pulp comprising a pair of vertically disposed spaced parallel standards, a horizontally disposed shaft rotatably supported by one of said standards and adapted to be driven by a power mechanism, a hollow shaft rotatably supported by the other standard and adapted to be connected to a source of liquid, a pipe provided with a plurality of spaced openings for the egress therethrough of liquid extending between said shafts and connected thereto, a drum supported by said pair of standards and adapted to receive therein paper stock to be deinked, a hopper connected to said drum for filling the latter, said drum including an upper semi-cylindrical portion and a reticulated bottom portion, said bottom portion comprising a pair of arcuate sections hingedly connected to said top portion whereby the pulp can be emptied from said drum after the ink has been removed therefrom, an arcuate vat extending longitudinally below said drum and supported by said standards for receiving waste liquids discharged through the reticulated bottom of said drum, said vat including a pair of arcuate sections adapted to be opened and closed to selectively discharge the deinked pulp therethrough, a channelway connected to said vat for the conveyance therealong of waste liquid, a manually operable valve for controllin the flow of liquid from said vat, a plurality of spaced parallel radially extending rods each having their inner ends secured to said pipe, rollers connected to the outer ends of said rods for dislodging any pulp adhering to the inner surface of said drum, and a plurality of paddles carried by said pipe for agitating the contents of the drum.

2. A machine for deinking and decoloring imprinted paper stock to produce pulp comprising a pair of vertically disposed spaced parallel stand- -dns lqq'ezyeqoi q 'eqs pesodsrp Ancquozpzoq 2 spin ported by one of said standards and adapted to be driven by a power mechanism, a hollow shaft rotatably supported by the other standard and adapted to be connected to a source of liquid,

6. a pipe provided with -a plurality of spaced openings for the egress therethroughof liquid extending between said shafts and connected thereto. a drum supported by said pairfof standards and adapted to receive therein paper stock to be deinked, .a'hopper 'co'nne'cte'dto said drum forfilling the latter, said drum including an upper semicylindrical portion and a reticulated bottomportion, said bottom portion comprising a pair of arcuate sections hingedly connected to said 'top portion whereby the pulp can be emptied from said drum after the ink has been removed therefrom, an arcuate vat extending longitudinally below said drum and supported by said standards for receiving waste liquids discharged through the reticulated bottom of said drum, said vat including a pair of arcuate sections adapted to be opened and closed to selectively discharge the deinked pulp therethrough, a channelway connected to said vat for the conveyance therealong of waste liquid, a manually operable valve for controlling the flow of liquid from said vat, a plurality of spaced parallel radially extending rods each having their inner ends secured to said pipe, rollers connected to the outer ends of said rods for dislodging any pulp adhering to the inner surface of said drum, and a plurality of paddles carried by said pipe for agitating the contents of the drum, and a liquid conveying tube interposed between said drum and vat, there being a plurality of openings in said tube for the egress therethrough of liquid.

3. A machine for removing ink from paper stock to produce a deinked pulp comprising a horizontally disposed cylindrical drum, approximately the lower half of said drum being of reticulated material for drainage of liquid therethrough, means for supplying liquids to said drum, said liquid supplying means including a perforated pipe extending longitudinally through said drum along the axis thereof, means for rotating said pipe, a plurality of agitating paddles fixed to and projecting from said pipe, arms fixed to and radiating from said pipe, pulp dislodging members carried by the outer ends of said arms, said pulp dislodging members being parallel to said pipe and being positioned in proximity to the wall of said drum for dislodging pulp adhering to the inner surface thereof upon rotation of said pipe, and a vat positioned around the reticulated portion of said drum to receive liquids discharged therefrom.

4. A machine for removing ink from paper stock to produce a deinked pulp comprising a horizontally disposed cylindrical drum, the lower portion of said drum being of reticulated material for drainage of liquid from the drum, a drive shaft mounted for rotation along the longitudinal axis of said drum, means for supplying liquid into said drum, means for rotating said drive shaft, a plurality of agitating paddles fixed to and projecting from said drive shaft, arms fixed to said drive shaft and projecting therefrom to adjacent the Wall of said drum, pulp dislodging members mounted on the outer ends of said arms, said pulp dislodging members being parallel to said drive shaft and serving to dislodge pulp adhering' to the inner surface of said drum, and a vat positioned around the reticulated portion of said drum to receive liquids discharged therefrom.

CHARLES S. REID.

(References on following page) References Cited in the file of this patent UNITED STATES PATENTS Number Name Date Lauga. Nov. 27, 1878 Meech May 24, 1881 Pond Apr. 15, 1884 Sherwood Mar. 14, 1905 Handford Dec. 19, 1905 Newnham Mar. 26, 1907 Burton Nov. 15, 1910 Number 8 Name Date Muntzing Dec. 31, 1912 Jefierson Sept. 10, 1918 Holthofi Nov. 23, 1926 Hammond Aug. 8, 1933 Crisp Mar. 5, 1935 White May 12, 1936 Woolsey et a1 Dec. 27, 1938 Bragg Nov. 12, 1940 Steely June 23, 1942 Lowe Oct. 26, 1948 

1. A MACHINE FOR DEINKING AND DECOLORING IMPRINTED PAPER STOCK TO PRODUCE PULP COMPRISING A PAIR OF VERTICALLY DISPOSED SPACED PARALLEL STANDARDS, A HORIZONTALLY DISPOSED SHAFT ROTATABLY SUPPORTED BY ONE OF SAID STANDARDS AND ADAPTED TO BE DRIVEN BY A POWER MECHANISM, A HOLLOW SHAFT ROTATABLY SUPPORTED BY THE OTER STANDARD AND ADAPTED TO BE CONNECTED TO A SOURCE OF LIQUID, A PIPE PROVIDED WITH A PLURALITY OF SPACED OPENINGS FOR THE EGRESS THERETHROUGH OF LIQUID EXTENDING BETWEEN SAID SHAFTS AND CONNECTED THERETO, A DRUM SUPPORTED BY SAID PAIR OF STANDARDS AND ADAPTED TO RECEIVE THEREIN PAPER STOCK TO BE DEINKED, HOPPER CONNECTED TO SAID DRUM FOR FILLING THE LATTER, SAID DRUM INCLUDING AN UPPER SEMI-CYLINDRICAL PORTION AND A RETICULATED BOTTOM PORTION, SAID BOTTOM PORTION COMPRISING A PAIR OF ARCUATE SECTIONS HINGEDLY CONNECT TO SAID TOP PORTION WHEREBY THE PULP CAN BE EMPTIED FROM SAID DRUM AFTER THE INK HAS BEEN REMOVED THEREFROM, AN ARCUATE VAT EXTENDING LONGITUDINALLY BELOW SAID DRUM AND SUPPORTED BY SAID STANDARDS FOR RECEIVING WASTE LIQUIDS DISCHARGED THROUGH THE RETICULATED BOTTOM OF SAID DRUM, SAID VAT INCLUDING A PAIR OF ARCUATE SECTIONS ADAPTED TO BE OPENED AND CLOSED OT SELECTIVELY DISCHARGE THE DEINKED PULP THERETHROUGH, A CHANNELWAY CONNECTED TO SAID VAT FOR THE CONVEYANCE THEREALONG OF WASTE LIQUID, A MANUALLY OPERABLE VALVE FOR CONTROLLING THE FLOW OF LIQUID FROM SAID VAT, A PLURALITY OF SPACED PARALLEL RADIALLY EXTENDING RODS EACH HAVING THEIR INNER ENDS SECURED TO SAID PIPE, ROLLERS CONNECTED TO THE OUTER ENDS OF SAID RODS FOR DISLODGING ANY PULP ADHERING TO THE INNER SURFACE OF SAID DRUM, AND A PLURALITY OF PADDLES CARRIED BY SAID PIPE FOR AGITATING THE CONTENTS OF THE DRUM. 